Nut-lock.



L. P. SCHRAMM.

n.. o 9 1 .4H am. U .A D E T. m T A D... I 0 .2, 5 9 8 0' N l NUT LOCK. urmomlox FILED nu. 13,1003.

LOUIS P. SCHRAMM, OF TOLEDO, OIIIO.

Specification of Letters Patent. Y

NUT-Loox.

Patented Aug. 4, 1908.

Application filed March 13, 1908. Serial- No. 420,869.

To III uJlor/z i t muy concern.'

Bc it known that I, Loris P. Seiiimiiii, a citizen of the United States, residing at Toledo. in the county of Luas and State of,

' axie. and the invention consists in supplying i the ordinary axle with a centrall)v disposed lhere adapted for the reception of a locking element which is normally projected beyond theVface of the axle by -a suitable spring, and in prpviding the ordinary hollow axle nut with t' non-circular opening adapted t0 be engage\dby the spring pressed member and to ei'ectivelv retain the nut in locked position upon thenixle, the nut being readily renmved from `the axle, when desired, by

simpiy forcing the locking element out of` engagement with the nut by pressing it within the bore against the spring by a nail or other suitable instrument, and the nut revolved from engagement with the threaded extremity of the axle.

With these and other objects in view the invention resides in the novel construction of elements and their arrangement in operative combination, hereinafter. fully described and claimed.

In the accompanying drawings, Figure l is a sectional view of an axle spindle having a retaining nut secured thereon by my iniprovcment. Fig. 2 is an enlarged face view of the nut. Fig. 3 is an end elevation of the axle spindle and bushing. Fig. 4 is a detail perspective view of the locking element and the bushing.

In the accompanying drawings the nii-- niersl 1 designates an axle spindle of the or dinary construction and provided with the nsusl reduced threaded extremity 2. The threaded extremity 2 and the axle 1 are provided with a centrally arranged bore 3. This bore IS is rovided near its outer edge with a suitably tliireaded portion 4, adapted for engagement with a threaded bushing 5. The bushing 5 is provided with a nonscircular passage 6, 'adapted for the rece )tion of a non circular locking element 7. "his element 7 may be provided with a flange 8, and a rearwardly projecting portion 9 adapted for the rece tion of a helical spring 10 which normal y forces the non-circular locking member 7 beyond the face of the threaded extremity 2.

A carriage nut 1l o f the ordinary construction is employed. This nut 11 is provided with the usual interiorly arranged screw threaded portion adapted for engagement with the threaded extremity 2 of the axle spindle. face with a centrally arranged non-circular opening l2, adapted to cooperate with the non-circular member 7 when the init is positioned upon the spindle.

From the above description it will be noted that I have provided an extremely simple and efl'cctive means for securely retaining a mit in locked position upon an axle, one which is automatic in action, as the spring pressed engaging element will readily engage the opening of the nut when the nut is screwed upon the axle spindle, onewliich may be readily and easily applied to any ordinary axle, and in which the ordinary carriage lint is efl'ectively t\liipicyed by simply providing a non-circular passage within its face.

Having thus fully described the invention what is claimed as new is:

l'lhe coi-iibination with an axle having a,

The nut 11 is provided upon itsy threaded extremity provided with a boret` having threads for a portion of its length, a threaded bushing having a non-circular passage adapted for engagement within the bore, a non-circular member having a collar adapted to engage the passage of the bushing, a

helical `spring within the bore adapted to project tlie non-circular member beyond the end of the axle, and an interiorly threaded nut having a non-circular opening within its face.

In testimony whereof I alix my signature in presence oi' two witnesses.

LOUIS P. SCI'IRAMM.

II itnesscs: ELLswoirrn M. BE.\RD\,`\ Cona L. FALLOS. 

